mirror of https://github.com/k3s-io/k3s
119 lines
2.6 KiB
Go
119 lines
2.6 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package watch
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import (
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"reflect"
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"sync"
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"testing"
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"time"
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)
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type myType struct {
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ID string
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Value string
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}
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func (*myType) IsAnAPIObject() {}
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func TestMux(t *testing.T) {
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table := []Event{
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{Added, &myType{"foo", "hello world 1"}},
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{Added, &myType{"bar", "hello world 2"}},
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{Modified, &myType{"foo", "goodbye world 3"}},
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{Deleted, &myType{"bar", "hello world 4"}},
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}
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// The mux we're testing
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m := NewMux(0)
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// Add a bunch of watchers
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const testWatchers = 2
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wg := sync.WaitGroup{}
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wg.Add(testWatchers)
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for i := 0; i < testWatchers; i++ {
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// Verify that each watcher gets the events in the correct order
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go func(watcher int, w Interface) {
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tableLine := 0
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for {
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event, ok := <-w.ResultChan()
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if !ok {
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break
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}
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if e, a := table[tableLine], event; !reflect.DeepEqual(e, a) {
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t.Errorf("Watcher %v, line %v: Expected (%v, %#v), got (%v, %#v)",
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watcher, tableLine, e.Type, e.Object, a.Type, a.Object)
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} else {
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t.Logf("Got (%v, %#v)", event.Type, event.Object)
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}
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tableLine++
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}
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wg.Done()
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}(i, m.Watch())
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}
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for i, item := range table {
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t.Logf("Sending %v", i)
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m.Action(item.Type, item.Object)
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}
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m.Shutdown()
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wg.Wait()
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}
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func TestMuxWatcherClose(t *testing.T) {
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m := NewMux(0)
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w := m.Watch()
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w2 := m.Watch()
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w.Stop()
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m.Shutdown()
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if _, open := <-w.ResultChan(); open {
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t.Errorf("Stop didn't work?")
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}
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if _, open := <-w2.ResultChan(); open {
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t.Errorf("Shutdown didn't work?")
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}
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// Extra stops don't hurt things
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w.Stop()
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w2.Stop()
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}
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func TestMuxWatcherStopDeadlock(t *testing.T) {
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done := make(chan bool)
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m := NewMux(0)
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go func(w0, w1 Interface) {
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// We know Mux is in the distribute loop once one watcher receives
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// an event. Stop the other watcher while distribute is trying to
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// send to it.
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select {
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case <-w0.ResultChan():
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w1.Stop()
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case <-w1.ResultChan():
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w0.Stop()
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}
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close(done)
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}(m.Watch(), m.Watch())
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m.Action(Added, &myType{})
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select {
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case <-time.After(5 * time.Second):
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t.Error("timeout: deadlocked")
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case <-done:
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}
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m.Shutdown()
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}
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